50 Geology and Mineralogy of a part of Massachusetts, &c. 
Windsor, in Worthington, Florida, Plainfield, and in the 
towns in the same direction in Vermont. In Florida, 
some of it is very hard, contains crystals of sulphuret of 
iron, and is exactly like specimens from Zeblitz in Saxony. 
With the serpentine is often found magnetic oxide of iron, 
hyalite, chalcedony, talc, asbestus, &c. 
28. TALC.- 
Var. 1. Common. 
White, greenish white, and deep green ; often in large 
folia with rhomb spar in the bed of steatite in Middlefield— 
beautiful. In masses of small scales with actynolite. In 
Chester, brown tale forms veins in mica-slate-—-Emmons. 
in Savoy is a narrow stratum of brownish or dark gray 
talc, which exfoliates, even in the flame of a candle, much 
more than this mineral usually does. A very thin leaf 
will often divide in this way into fifty folia, swelling into a 
large mass and winding about in a curious manner. It 
contains ten per cent. of water, to which this great exfolia- 
tion is probably owing, as this is a much larger quantity 
than is given in any analysis of the mineral. This tale is 
doubtless the same as that mentioned in this Journal, Vol. 
VII. p.55. Ifa new name be necessary for this variety, 
can it be Vermiculite with propriety? For this is an estab- 
lished name of certain organic remains found as petrifac- 
tions. . 
Remark.-—T his tale fuses into.a dark colored enamel. 
The books say that the enamel of tale is white. The lighter 
colored varieties do indeed melt into a white enamel; but 
the darker give a dark enamel, without exception, so far as 
I have examined; and I have tried several from different 
places which did not exfoliate in the remarkable manner 
just mentioned. 
Fishin onselede: 
The lamina sometimes divide so as to present this sub- 
variety. 
